Introduced by Rep. Jeff Irwin (D) on September 17, 2015To decriminalize marijuana. The bill would make it legal for adults 21 or older to possess and transfer up to one ounce of marijuana, impose a 10 percent excise tax on sales (in addition to the 6 percent sales tax), and establish a comprehensive regulatory and licensing regime on producers and retailers. Local governments would be allowed to ban retail sales and production. Official Text and Analysis.